14R/M421R/15R/M521R
Specifications
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Dell™, the DELL logo, and Inspiron™ are trademarks of Dell Inc. Microsoft® and Windows® are either trademarks
or registered trademarks of Microsoft Corporation in the United States and/or other countries. Intel® is a
registered trademark and Core™ is a trademark of Intel Corporation in the U.S. and other countries. AMD® is a
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SIG, Inc. and is used by Dell under license.
2013 - 10 A01
Regulatory Model: P33G/P25F | Type: P33G001/P33G002/P25F001/P25F002
Computer Model: Inspiron 5420/5425/5520/5525/7420/7520
Inspiron
Dimensions
14R-5420/7420/
M421R-5425
Height (front and back) 28.88 mm to 31.60 mm
(1.14 inches to 1.24
inches)
Width 347.00 mm (13.66 inches) 378.00 mm (14.88
Depth 240.00 mm (9.45 inches) 252.00 mm (9.92 inches)
Weight (with 6-cell
battery)
2.40 kg (5.30 lb)
NOTE: The weight of your
laptop will vary depending
on the configuration
ordered and the
manufacturing variability.
Inspiron
15R-5520/7520/
M521R-5525
30.03 mm to 34.10 mm
(1.18 inches to 1.34
inches)
inches)
2.78 kg (6.13 lb)
NOTE: The weight of
your laptop will vary
depending on the
configuration ordered
and the manufacturing
variability.
Inspiron
System Information
14R-5420/7420/
M421R-5425
Processor • Intel Pentium dual core
• Intel Core i3
• Intel Core i5
• Intel Core i7
• AMD A4-4300M
• AMD A6-4400M
• AMD A8-4500M
• AMD A10-4600M
System chipset • Intel HM77 Express
chipset
• AMD A70M FCH chipset
Inspiron
15R-5520/7520/
M521R-5525
• Intel Pentium dual
core
• Intel Core i3
• Intel Core i5
• Intel Core i7
• AMD A4-4300M
• AMD A6-4400M
• AMD A8-4500M
• AMD A10-4600M
• Intel HM77 Express
chipset
• AMD A70M FCH
chipset
Inspiron
Memory
14R-5420/7420/
M421R-5425
Connectors two internally-accessible
DDR3 SODIMM sockets
Capacities 2 GB and 4 GB 2 GB and 4 GB
Minimum memory 2 GB 2 GB
Maximum memory 8 GB 8 GB
Memory type 1600 MHz DDR3 SODIMM 1600 MHz DDR3
Memory configurations
supported
2 GB, 4 GB, 6 GB, and
8 GB
Inspiron
15R-5520/7520/
M521R-5525
two internally-accessible
DDR3 SODIMM sockets
SODIMM
2 GB, 4 GB, 6 GB, and
8 GB
Inspiron
Communications
14R-5420/7420/
M421R-5425
Modem (optional) external V.92 56 K USB
modem
Network adapter 10/100 Ethernet LAN on
system board
(Inspiron 14R-5420,
Inspiron M421R-5425)
10/100/1000 Ethernet
LAN on system board
(Inspiron 14R-7420)
Wireless WLAN, WiMax, Wi-Fi
abgn/bgn, Wi-Di
(optional), and Bluetooth
wireless technology
Inspiron
15R-5520/7520/
M521R-5525
external V.92 56 K USB
modem
10/100 Ethernet LAN on
system board
(Inspiron 15R-5520,
Inspiron M521R-5525)
10/100/1000 Ethernet
LAN on system board
(Inspiron 15R-7520)
WLAN, WiMax, Wi-Fi
abgn/bgn, Wi-Di
(optional), and Bluetooth
wireless technology
Inspiron
Audio
14R-5420/7420/
M421R-5425
Controller Conexant CX20672-21Z Conexant CX20672-21Z
Speaker 2 W 2 W
Internal microphone
support
Volume controls program menus and
single digital microphone
in camera
assembly
keyboard media
control keys
Inspiron
15R-5520/7520/
M521R-5525
single digital
microphone in camera
assembly
program menus and
keyboard media
control keys
Inspiron
Video
14R-5420/7420/
M421R-5425
Video type
Integrated Intel HD graphics
(Inspiron 14R-5420)
Discrete • NVIDIA GeForce
GT630M (Inspiron
14R-5420)
• NVIDIA GeForce
GT640M (Inspiron
14R-7420)
• AMD Radeon HD
7650M (Inspiron
M421R-5425)
Inspiron
15R-5520/7520/
M521R-5525
• Intel HD graphics
(Inspiron
15R-5520/7520)
• AMD Radeon HD
7420G (Inspiron
M521R-5525)
• AMD Radeon HD
7520G (Inspiron
M521R-5525)
• AMD Radeon HD
7640G (Inspiron
M521R-5525)
• AMD Radeon HD
7660G (Inspiron
M521R-5525)
• AMD Radeon HD
7670M (Inspiron
15R-5520)
• AMD Radeon HD
7730M (Inspiron
15R-7520)
• AMD Radeon HD
7650M (Inspiron
M521R-5525)
Inspiron
Video
14R-5420/7420/
M421R-5425
Video memory
Integrated Shared Shared
Discrete 1 GB (Inspiron 14R-5420,
Inspiron M421R-5425)
2 GB (Inspiron 14R-7420) 2 GB (Inspiron 15R-7520)
Inspiron
15R-5520/7520/
M521R-5525
1 GB (Inspiron 15R-5520,
Inspiron M521R-5525)
Ports and
Connectors
Audio one microphone-in port
Mini-Card one half-size Mini-Card
HDMI one 19-pin port one 19-pin port
Network adapter one RJ45 port one RJ45 port
USB three 9-pin USB
Media Card Reader one 8-in-1 slot one 8-in-1 slot
VGA one 15-hole port one 15-hole port
mSATA (optional) one mSATA port that
Inspiron
14R-5420/7420/
M421R-5425
one stereo headphone/
microphone combo port
one digital microphone
slot
one full-size Mini-Card
slot (optional)
(Inspiron 14R-5420/7420)
3.0-compliant ports
one 9-pin USB
3.0-compliant port with
PowerShare and Windows
debugging
supports up to 32 GB
(Inspiron 14R-5420/7420)
Inspiron
15R-5520/7520/
M521R-5525
one microphone-in port
one stereo headphone/
speaker port
one digital microphone
one half-size Mini-Card
slot
one full-size Mini-Card
slot (optional)
three 9-pin USB
3.0-compliant ports
one 9-pin USB
3.0-compliant port
with PowerShare and
Windows debugging
one mSATA port that
supports up to 32
GB (Inspiron 15R5520/7520)
Inspiron
Battery
14R-5420/7420/
M421R-5425
6-cell “smart” lithium ion
Height 20 mm (0.79 inches) 20 mm (0.79 inches)
Width 208 mm (8.19 inches) 208 mm (8.19 inches)
Depth 51 mm (2.00 inches) 51 mm (2.00 inches)
Weight 0.33 kg (0.73 lb) 0.33 kg (0.73 lb)
Voltage 11.1 VDC 11.1 VDC
Charge time
(approximate)
Operating time battery operating time
Coin-cell battery CR-2032 CR-2032
4 hours (when the
computer is turned off)
varies depending on
operating conditions
and can be significantly
reduced under certain
power-intensive
conditions
Inspiron
15R-5520/7520/
M521R-5525
4 hours (when the
computer is turned off)
battery operating time
varies depending on
operating conditions
and can be significantly
reduced under certain
power-intensive
conditions
Inspiron
Power adapter
14R-5420/7420/
M421R-5425
Type 65 W
(Inspiron 14R-5420/7420)
90 W (Inspiron
14R-5420/7420, Inspiron
M421R-5425)
Input voltage 100-240 VAC 100—240 VAC
Input current (maximum) 1.50 A/1.60 A/2.50 A
(Inspiron M421R-5425)
1.50 A/1.60 A/1.70 A/
2.50 A (Inspiron
14R-5420/7420)
Input frequency 50-60 Hz 50—60 Hz
Inspiron
15R-5520/7520/
M521R-5525
65 W/90 W
1.50 A/1.60 A/
1.70 A/2.50 A
Inspiron
Power adapter
14R-5420/7420/
M421R-5425
Output current
(continuous)
Output power 65 W (Inspiron
Rated output voltage 19.50 +/– 1 VDC 19.50 +/–1 VDC
Temperature range
Operating 0 °C to 40 °C
Storage –40 °C to 70 °C
3.34 A (Inspiron
14R-5420/7420)
4.62 A (Inspiron
14R-5420/7420, Inspiron
M421R-5425)
14R-5420/7420)
90 W (Inspiron
14R-5420/7420, Inspiron
M421R-5425)
(32 °F to 104 °F)
(–40 °F to 158 °F)
Inspiron
15R-5520/7520/
M521R-5525
3.34 A/4.62 A
65 W/90 W
0 °C to 40 °C
(32 °F to 104 °F)
–40 °C to 70 °C
(–40 °F to 158 °F)
Media-card reader
Cards supported • Secure Digital (SD) memory card
• Secure Digital High Capacity (SDHC)
• Secure Digital Extended Capacity (SDXC) with ultra
high-speed
• Memory Stick
• Memory Stick PRO (MS-PRO)
• Memory Stick Extended Capacity (MSXC)
• MultiMedia Card (MMC)
• MultiMedia Card plus (MMC+)
Inspiron
Touchpad
14R-5420/7420/
M421R-5425
X/Y position resolution
(graphics table mode)
Size
Height 52.7 mm (2.07 inches)
Width 97.0 mm (3.82 inches)
240 cpi 240 cpi
sensor-active area
rectangle
Inspiron
15R-5520/7520/
M521R-5525
52.7 mm (2.07 inches)
sensor-active area
97.0 mm (3.82 inches)
rectangle
Inspiron
Keyboard (backlit)
14R-5420/7420/
M421R-5425
Number of keys 102 (U.S.)
103 (United Kingdom)
106 (Japan)
105 (Brazil)
Inspiron
15R-5520/7520/
M521R-5525
102 (U.S.)
103 (United Kingdom)
106 (Japan)
105 (Brazil)
Inspiron
Display
14R-5420/7420/
M421R-5425
Type 14.0” HD WLED TrueLife
(1366 x 768)
14.0” HD+ WLED TrueLife
(optional) (1600 x 900)
(Inspiron 14R-5420/7420)
Maximum resolution 1600 x 900 (Inspiron 14R-
5420/7420)
1366 x 768 (Inspiron
M421R-5425)
Dimensions
Height
Width
Diagonal
Refresh rate 60 Hz 60 Hz
Operating angle
Horizontal viewing angle 40/40 40/40
Vertical viewing angle 15/30 (H/L) 15/30 (H/L)
Pixel pitch 0.226 mm x 0.226 mm 0.252 mm x 0.252 mm
173.95 mm
(6.85 inches)
309.40 mm
(12.18 inches)
355.60 mm
(14.00 inches)
0 degree (closed) to
135degrees
Inspiron
15R-5520/7520/
M521R-5525
15.6” HD WLED TrueLife
(1366 x 768)
15.6” FHD WLED, AG
(optional) (1920 x 1080)
1920 x 1080
193.54 mm
(7.62 inches)
344.23 mm
(13.55 inches)
396.42 mm
(15.60 inches)
0 degree (closed) to
135degrees
Inspiron
Camera
14R-5420/7420/
M421R-5425
Camera resolution 720p HD;
1280 x 720 pixels
Video resolution
(maximum)
Diagonal viewing angle 60 degrees 60 degrees
1280 x 720 pixels 1280 x 720 pixels
Inspiron
15R-5520/7520/
M521R-5525
720p HD;
1280 x 720 pixels
Computer
environment
Temperature range
Operating 0 °C to 35 °C
Storage –40 °C to 65 °C
Relative humidity (maximum)
Operating 10 % to 90 %
Storage 10 % to 95 %
Maximum vibration (using a random vibration spectrum that simulates user
environment)
Operating 0.66 GRMS 0.66 GRMS
Storage 1.3 GRMS 1.3 GRMS
Maximum shock (Measured with hard drive in operating status and a 2-ms
half-sine pulse for operating. Also measured with hard drive in head-parked
position and a 2-ms half-sine pulse for storage)
Operating 110 G 110 G
Storage 160 G 160 G
Altitude (maximum)
Operating –15.2 m to 3048 m
Storage –15.2 m to 10,668 m
Airborne contaminant
level
Inspiron
14R-5420/7420/
M421R-5425
(32 °F to 95 °F)
(–40 °F to 149 °F)
(non-condensing)
(non-condensing)
(–50 ft to 10,000 ft)
(–50 ft to 35,000 ft)
G1 as defined by
ISA-S71.04-1985
Inspiron
15R-5520/7520/
M521R-5525
0 °C to 35 °C
(32 °F to 95 °F)
–40 °C to 65 °C
(–40 °F to 149 °F)
10 % to 90 %
(non-condensing)
10 % to 95 %
(non-condensing)
–15.2 m to 3048 m
(–50 ft to 10,000 ft)
–15.2 m to 10,668 m
(–50 ft to 35,000 ft)
G1 as defined by
ISA-S71.04-1985
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